Waste tank leaking slightly

ejmoore · Sep 1, 2023

The waste tank on our 2018 T6 Cali Ocean seems to dribble slightly all the time out of the discharge pipe. This is noticeable when the tank is filling up & needs emptying, but may occur any time. It's not much, but it makes us look like we've anti-socially left the drain open.

Any thoughts why this might happen, and what can be done to resolve it? Thanks.

WelshGas · Sep 1, 2023

ejmoore said:
The waste tank on our 2018 T6 Cali Ocean seems to dribble slightly all the time out of the discharge pipe. This is noticeable when the tank is filling up & needs emptying, but may occur any time. It's not much, but it makes us look like we've anti-socially left the drain open.

Any thoughts why this might happen, and what can be done to resolve it? Thanks.

There is an overflow which bypasses the drain tap so the outlet will dribble if the tank is full. Maybe something is caught in the valve stopping it closing fully. Try opening and closing it a few times, vigorously to clear any debris.

ejmoore · Sep 1, 2023

Thank you WG, I'll give that a go.

Also the whole thing is pretty smelly - is there any way of really cleaning the whole system out, other than just flushing it through with clean water, which we do?

ejmoore · Sep 1, 2023

and the flow when it's draining is very feeble - takes forever.

DevillBelgium · Sep 1, 2023

ejmoore said:
and the flow when it's draining is very feeble - takes forever.

Sounds like the outlet is indeed clogged.
There is a product to clean out the tanks in the shop, you can use this to clean it out.

Fenwicks Waste Pipe & Tank Cleaner - 1 Litre - CampervanBits

Perfect for cleaning grey water system in your campervan or motorhome

vwcaliforniaclub.com

ejmoore · Sep 1, 2023

DevillBelgium said:
Sounds like the outlet is indeed clogged.
There is a product to clean out the tanks in the shop, you can use this to clean it out.

Fenwicks Waste Pipe & Tank Cleaner - 1 Litre - CampervanBits

Perfect for cleaning grey water system in your campervan or motorhome

vwcaliforniaclub.com

Thanks - I'll get some, sounds just the thing.

Carabiner · Sep 6, 2023

Hi,

Our brand new 6.1 also has a feeble drain speed. For other 6.1 owners, even when fully emptied, the overhead display still shows fluid in the grey water tank. Is that normal? I'm assuming so.

Thanks, Terry

WelshGas · Sep 6, 2023

TerryLansdown said:
Hi,

Our brand new 6.1 also has a feeble drain speed. For other 6.1 owners, even when fully emptied, the overhead display still shows fluid in the grey water tank. Is that normal? I'm assuming so.

Thanks, Terry

Yes.

GrumpyGranddad · Sep 6, 2023

TerryLansdown said:
Hi,

Our brand new 6.1 also has a feeble drain speed. For other 6.1 owners, even when fully emptied, the overhead display still shows fluid in the grey water tank. Is that normal? I'm assuming so.

Thanks, Terry

Normal waste tank display.

Stu@rt · Sep 6, 2023

The waste tank indicator is a binary one. It either shows empty or full, no graduation, or scale. I agree that it looks to show something in there, but that is the "empty" state. Once full it shows differently and flashes a msg to tell you to empty it.

andyinluton · Sep 6, 2023

TerryLansdown said:
Hi,

Our brand new 6.1 also has a feeble drain speed.

Have you made sure the plug in the sink is out? makes a huge difference.

Carabiner · Sep 6, 2023

andyinluton said:
Have you made sure the plug in the sink is out? makes a huge difference.

Ah, no, but pretty sure it was out. Will do a more considered test, thanks for the tip.

Hawthorn37 · Sep 6, 2023

ejmoore said:
Thank you WG, I'll give that a go.

Also the whole thing is pretty smelly - is there any way of really cleaning the whole system out, other than just flushing it through with clean water, which we do?

We sanitise the clean tank every couple of months in the summer with Milton (other products are available), then run that tank into the waste tank and let it sit for a while before emptying.